Finding the Fourth Proportional to 128,168.45, 176,877.50 and 73,720.52

Step by Step Solution

1. Step 1: Write the proportion equation
   128,168.45 : 176,877.50 = 73,720.52 : x
2. Step 2: Convert to fraction form
   128,168.45/176,877.50 = 73,720.52/x
3. Step 3: Cross multiply
   128,168.45x = 176,877.50 × 73,720.52
4. Step 4: Simplify right side
   128,168.45x = 13,039,500,023.31
5. Step 5: Solve for x
   x = 13,039,500,023.31/128,168.45
6. Step 6: Final answer
   x = 101,737.21